AutoCodes – Lincoln – B1239 Lincoln

B1239 Lincoln Code - Airflow Blend Door Driver Circuit Failure

Quick Answer

When the outside ambient air temperature is cool enough to provide adequate high-voltage battery cooling, the Traction Battery Control Module (TBCM) positions the auxiliary air inlet door actuator in the OPEN position. Common causes include Faulty Auxiliary Air Inlet Mode Door Actuator, Auxiliary Air Inlet Mode Door Actuator harness is open or shorted, Auxiliary Air Inlet Mode Door Actuator circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B1239 Lincoln indicates Airflow Blend Door Driver Circuit Failure.
Common causes: Common causes include Faulty Auxiliary Air Inlet Mode Door Actuator, Auxiliary Air Inlet Mode Door Actuator harness is open or shorted, Auxiliary Air Inlet Mode Door Actuator circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 940

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1239 Lincoln Description

When the outside ambient air temperature is cool enough to provide adequate high-voltage battery cooling, the Traction Battery Control Module (TBCM) positions the auxiliary air inlet door actuator in the OPEN position. If the outside ambient air temperature is too warm to provide adequate High Voltage Traction Battery (HVTB) cooling, the TBCM positions the auxiliary air inlet door actuator in the CLOSED position and requests A/C cooling. The TBCM sends and receives signals to the auxiliary air inlet door actuator on circuits, indicating the position of the auxiliary air inlet door. The TBCM controls the movement of the door by controlling power and ground to the auxiliary air inlet door actuator through circuits.

OBDII Code B1239 Lincoln - Airflow Blend Door Driver Circuit Failure - AutoCodes.com — B1239 Lincoln Code - Airflow Blend Door Driver Circuit Failure

What does this mean?

What are the Possible Causes of the DTC B1239 Lincoln?

Faulty Auxiliary Air Inlet Mode Door Actuator
Auxiliary Air Inlet Mode Door Actuator harness is open or shorted
Auxiliary Air Inlet Mode Door Actuator circuit poor electrical connection
Faulty Traction Battery Control Module (TBCM)

How to Fix the DTC B1239 Lincoln?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1239 Lincoln code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need Help with the Code?

Get the B1239 Lincoln code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1239 Lincoln Code

1. What are the common symptoms of OBDII code B1239 in a Lincoln related to Airflow Blend Door Driver Circuit Failure?

- Common symptoms include inconsistent airflow from the HVAC system, poor temperature control, and unusual noises coming from the dashboard area.

2. What are the possible causes of OBDII code B1239 in a Lincoln?

- The code B1239 may be triggered by a faulty blend door actuator, wiring issues, a malfunctioning control module, or a problem with the blend door itself.

3. How can I diagnose the cause of OBDII code B1239 in a Lincoln?

- A thorough diagnosis involves checking the blend door actuator for proper operation, inspecting the wiring for any damage, and testing the control module for functionality using a diagnostic tool.

4. Can I still drive my Lincoln with OBDII code B1239 triggered?

- While it may be possible to drive the vehicle with this code, it is not recommended as it can lead to discomfort due to poor HVAC system performance.

5. How can I repair OBDII code B1239 in a Lincoln related to Airflow Blend Door Driver Circuit Failure?

- Repairing this code typically involves replacing the faulty blend door actuator, repairing any damaged wiring, or reprogramming the control module to resolve the issue.

6. Are there any DIY tips for fixing OBDII code B1239 in a Lincoln?

- DIY enthusiasts can attempt to replace the blend door actuator following online guides or repair manuals. However, it is recommended to consult a professional for accurate diagnosis and repair.

7. How much does it cost to repair OBDII code B1239 in a Lincoln at a dealership or repair shop?

- The cost of repair can vary depending on the exact cause of the issue, but it typically ranges from $200 to $500, including parts and labor.

8. Is OBDII code B1239 a common issue in Lincoln vehicles?

- Yes, airflow blend door driver circuit failure related to code B1239 is a relatively common issue in Lincoln vehicles, especially in older models or vehicles with high mileage.

9. Can OBDII code B1239 in a Lincoln be prevented?

- Regular maintenance of the HVAC system, including checking for any unusual noises or airflow issues, can help prevent the occurrence of code B1239 related to airflow blend door driver circuit failure.

10. Will resetting the OBDII system clear code B1239 in a Lincoln?

- Resetting the OBDII system may temporarily clear the code, but it is likely to return if the underlying issue with the airflow blend door driver circuit is not addressed.